Carburetor



June 18 1926. 1,587,629

7 J. F. BATES CARBURETOR Filed August 18, 1923 Patented June 8 1923.

UNITED: 51: 1551:

Parent OaFfitCfEg...

CARBURETOR;

Application filed August 18, 1923, Serial No. 658,085, andiin-New Zealand.September. 8, 1922.-;..

My invention relatesto carburetors, and

pending into the tank, thelower end of such pipe containing a float, andor-itices or perforations through which theair is drawn.

In one form of the carburetor the air induction pipe depends through a cap or cover l'or an opening-inthe. tank large enoughior the insertion of the float upon the-lower end. This induction pipe depends. down-.

wardly a desired'distance to form a section.

and upon such section anothersection slides havinga stop'whereb-y it will not pass the end of the first section. Upon-tins second sectionathird pipeslides also having astop. so that it will-not passbeyond' the end of The lower end of this the second. section. thirdsection is provided withorifices or perforations tor the passage of air to-the :t'ueL .Near thelower end of this thirdsection a float is arranged whereby theorifices are retained the desired distance below the level' o'tthesurface-of the fuel;

pass througlr holes'in the-float if desired; Theintake-pipeto the engine may lead from the cap or trom any other part of the tanlc.

In another form, the air induction pipe may depend to near the bottom of the fuel tank and upon thispipe a section slides con taining stops or rings-upon its lower end,

while a second section slidesover. this first section, the downward movement being limited by the stops referred to. The second section has a ring whereby it is guided upon the induction pipe, while upon the second section a. third section slides also having stops to limit its downward movement. The end of this section is closed and slides upon the induction pipe and has orifices or per forations for the passage of air, the float being attached immediately above the orifices.

Any number of telescoping sections may be employed provided they are guided and have means to prevent air passing between them.

The invention will now be described with The'fioat. and section may be guided by means of rods depending from thecap and such rods may. I

reference to. the. accompanying drawing; wherein.:-- V

Figure 1:, is.- a sectional elevation.- ot. the; carburetor collapsed.-

EigureQ, is section;- through fuel tank; showing. the carburetor depending to. the... bottom; otlthe tanks.

Figure -.3,'.is va view of, an enlarged detail,

Figure 4-, is a sectional view of amodified form.

Figure '5.,is, a viewof; anenlaigflddetaih,

Fgure 6., is. an enlarged. sectional, plan. through.thecarburetorshown-in Fig. 4. I

According toEigures l to 3,-the.-air induction pipe lpassesthrough a .cap 2 screwed uponaineck 1.5. of thettank 9; This induc;v tion pi pe. is screwed .u'pomra.ltubular'.section1 3 which. dependsv doWinwardly. into. th tank a desired distance, and).upon;suohnsection another. section A slides; The section, 3; has a flange 5. at, its. lower. rendupontheenterior thereofl. while the. section. 4 has .ar.si1nilar flanged at itstopr end. upon the inside there. of (F. ig.-..3;)., Because, otfthefiangesb and fi, the section. ag caninot.passltlietloweni end. oi the seotionfi: Two other, telescopic sections 7 and. 8 have. similar cooperating. stops whereby. they. areenabledto; be. extended to the bottonroiz the. tankl ,9. Upon .the lower end. of, section Sta; float; 1.0:,is placed, while the. lower. endofysuch section is provided. with.;.orifioes 11.. The.;.float;;.10-andsections are. guided vertically. by meansof rods .12 passing through, holes in; the float, These rods arev fixedqtofai plate '13: supported. upon a. circumferential shoulder 14, of the neck 15.:of thevtank; Thegplateslii; isproyided with: orifices. 1.6 don the passage of, ;the. mix.- ture-m hich to, the; engine through the induction pipe 17.

In operation, the air is drawn by the suction of the engine into the pipe 1, thence into the sections 3 to 8 where it passes through the perforations in the bottom of the section 8, thence through the upper surface of the fuel and through the perforations 16 and into the pipe 17 which leads to the engine.

In the modification illustrated in Figure 4, the air induction pipe 1 depends to near the bottom of the fuel tank and upon this pipe the tubular sections 20, 21 and 22 are adapted to slide. The sections 20 and 21 have rings 23 at their bottom ends (Fig. 5) whereby they are slidably guided upon the pipe 1 and to provide an annular space 24 between the wall of the sections and the pipe. The upper end of the section 20 has a flange 25 to slide upon the air induction :3 pipe, and the section is limited in its clownward travel by means of the flange engaging a ring 26 upon the pipe. The rings 23 upon the bottom ends of the sections 20 and 21 are provided with a number of perforations 27 (Fig. 5) so that there is communication between the annular spaces. The section '21 slides-upon the section 20 and the section 22 slides upon the section 21. The bottom ends of the sections 20 and 21 have outwardly projecting flanges 28 which support the sections 21 and 22 by means of inwardly formed flanges 29 upon the top ends of such sections.

' The induction pipe 1 is formed with orifices 30 at a position near the upper part of the section 20, while the section 22 may have a spherical or otherwise shaped bottom which is provided with a number of perforations 31 through which the air passes. A. float preferably of circular form is attached to the lower end of the bottom section 22 above the perforations 31. This float should be of a buoyancy sufficient to sink the perforations 31 just below the surface of the fuel 1; and may be adjustable upon the bottom section by any suitable means. Air will be drawn through the induction pipe entering through the holes 30 into the interior of the sections, as indicated by the arrows in Figure 5. The air then passes through the perforations 27 and through the perfora- 'tions 31 in the bottom section and, becomes charged with fuel. More or less than three sections may be used according to the depth of the fuel tank. The neck 33 is such that the section of largest diameter of the floating distributor may be passed through it and also allow suflicient area for the gaseous mixture to pass through the pipe into the engine, even when the floating distributor is at its highest position within the neck. The depth of the neck is such that when the sections are at their highest positions within the neck they will not extend beyond the depth of the neck so that the tank can be filled to its maximum capacity. The top of the neck is closed by a cap 34 while the air induction pipe 1 is fixed to this cap and so also the connection 35 for attachment to the pipe leading to the engine. The air induction pipe may be provided with a number of perforations 36 one being shown in Fig. 4: which perforations extend partly around the pipe at a position directly beneath the opening in the induction to the engine and form auxiliary air inlets.

The tank is preferably made as shown in Figure 2, and is of the usual circular form, but provided with slightly sloping false bottoms 37 so as to leave a well 38 at the bottom of the tank into which the lower end of the bottom section depends so that all the fuel may be used.

I claim as my invention:

1. In a carburetor, the combination of a fuel tank, an induction pipe depending into said fuel tank, a plurality of telescopic sec tions supported from said induction pipe and slidable with respect thereto and adapted to move to the bottom of the said tank, so

a float mounted upon the bottom section, the said sections having flanges at their ends to support the lower sections from the upper and to limit the shifting of said sections relative to each other.

2.A carburetor, comprising a fuel tank provided with a neck, a plate supported by said neck, rods depending from said plate, an air induction pipe extending into said fuel tank through said plate, a plurality of telescopic sections supported from the said air induction pipe and slidable with respect thereto, and adapted to move to the bottom of said tank, a floatmounted on the bottom section, and means for supporting the said sections from each other, the said float and the said sections being guided by the said rods.

In testimony whereof, I, have signed my name to this specification.

JAMES FRENRICK BATES. 

